Thursday, October 20, 2011

Math problems of the week: 4th grade Investigations vs.Singapore Math

Finding out how many people counted vs. finding common multiples

I. A 4th grade Investigations homework assignment, assigned in early November [click to enlarge]:

II. The 9th assignment in the 4th grade Singapore Math Primary Mathematics 4A workbook [click to enlarge]:

III. Extra Credit
Why does the Investigations assignment, but not the Singapore Math assigment, have to spell out its purpose? (See NOTE in the upper right corner of the former).


Anonymous said...

Since you like doing comparisons, how about comparing with the new "Math in Focus", the "new" math from Singapore which further Americanized which some schools are now using instead of the Singapore Math. I heard somewhere they did journal writing for this version, and saw a homework sheet for fourth grade that reminded me of your examples from Investigations. Maybe I just got a bad impression, but it seemed like they were ruining the math to make it more constructivist.

Katharine Beals said...

Thanks for the suggestion, Anon. I've heard about this development, but haven't yet got my hands on Math in Focus.